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MFC r275513:

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When the last reference on the vnode' vm object is dropped, read the
vp->v_vflag without taking vnode lock and without bypass.
This commit is contained in:
kib 2014-12-12 09:22:52 +00:00
parent 722ac120b4
commit 8b3b3c8447
1 changed files with 6 additions and 1 deletions
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7
sys/vm/vm_object.c
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@ -468,7 +468,12 @@ vm_object_vndeallocate(vm_object_t object)
}
#endif
if (object->ref_count > 1) {
/*
* The test for text of vp vnode does not need a bypass to
* reach right VV_TEXT there, since it is obtained from
* object->handle.
*/
if (object->ref_count > 1 || (vp->v_vflag & VV_TEXT) == 0) {
object->ref_count--;
VM_OBJECT_WUNLOCK(object);
/* vrele may need the vnode lock. */